/Engine/Plugins/VirtualProduction/RemoteControl/Source/RemoteControl/Public/IRemoteControlModule.h
Register a default entity metadata which will show up in an entity's detail panel. The initializer will be called upon an entity being exposed or when a preset is loaded in order to update all existing entities that don't have that metadata key.
bool RegisterDefaultEntityMetadata ( [FName](API\Runtime\Core\UObject\FName) MetadataKey, [FEntityMetadataInitializer](API\Plugins\RemoteControl\FEntityMetadataInitializer) MetadataInitializer )